SELECTED PRESENTATIONS

"Interfaces déclaratives et géométrie des motifs islamiques," IRISA, Rennes, France, June 22, 2007.

Presentation on Islamic Patterns to St. Olaf Great Con Program, spring 2004-06.

“Circles and Squares in Arab Design,” Minnesota Institute of Art, sponsored by the Arab-
     American Cultural Institute, Minneapolis, MN, September 16, 2006.

“St. Olaf Term in the Middle East,” Global Partners Workshop – Recruiting and Training
     Faculty for Taking Students Abroad, St. Olaf College, April 15-17, 2005.

“Symmetry in Islamic Patterns,” Macalester College, St. Paul, MN, March 3, 2005.

“Geometry of Islamic Patterns,” Third Cabri World Conference, Rome, Italy,
     September 9-12, 2004.

“St. Olaf Bioinformatics Course,” MITC sponsored Conference on Bioinformatics, Hope
     College, Holland, Michigan, May 13-15, 2004.

“St. Olaf Term in the Middle East,” St. Olaf Mathematics Department Colloquium Series,
     Spring 2002.

"Current Perspectives on the Teaching and Learning of Geometry in a Dynamic Environment,"
     Research Presession, Annual Meeting of NCTM, San Francisco, April 19-24, 1999.

" Les enseignants et la géométrie dynamique : une perspective culturelle," Laboratoire
     LORIA, Université Henri Poincaré, Nancy, France, March 11, 1999.

"The TI-92:  A Tool for Collaborative Inquiry in Geometry," St. Olaf Department of
     Mathematics Colloquium Series, November 7, 1996 (with J Cederberg and M Wallace).

"Microworlds and Interactive Learning," Invited panel presentation for Topic Group 19:
     Computer-Based Interactive Learning Environments, 8th International Congress on
     Mathematics Education, Seville, Spain, July 14-21, 1996.

"Dynamic geometry and declarative geometric programming,"  MAA Session on
     Dynamic Geometry, Joint Mathematics Meetings, San Francisco, January 4-7, 1995
     (with L Trilling).

"The St. Olaf NSF Geometry Project," The Geometry Center Meeting on Future
     Developments in Geometry Software, Minneapolis, July 15-18, 1993 (with J.
     Cederberg and M. Wallace).

"Des apports de l'EIAO à la recherche en Education et Formation," Troisièmes Journées
     EIAO de Cachan (International Conference on Interactive Computer Learning
     Environments), Ecole Normale Supérieure de Cachan, Paris, February 3-5, 1993.

"The Role of Technology in the Didactics of Geometry," NCTM Regional Meeting,
     Minneapolis, Mn, November 5-7 , 1992.

"French microworlds and tutors for teaching geometry and algebra," St. Olaf Geometry
     Project Conference and Tutorial, Northfield, Mn, June 24-27, 1992.

"Projet de formation des enseignants de la géométrie," Séminaire de didactiques, IREM,
     Université de Paris VII, Paris, March 18, 1992; Séminaire de didactiques, IRMAR,
     Université de Rennes, Rennes, March 5, 1992; Séminaire de didactiques, Laboratoire
     De Structures Discrètes et de Didactiques, IMAG, Grenoble, February 5, 1992.

"Le developpement et l'utilisation des scenarios dans  un cours de geometrie,"
     Deuxiemes Journées EIAO de Cachan, Ecole Normale Supérieure de Cachan, Paris,
     January 24-25, 1991.

Tutorial on "Logic Programming," 20th Small College Computing Symposium,
     Macalester College, April 10-11, 1987.

Sloan Seminar Lecturer on "Logic Programming," series of 15 lectures,
     Carleton College, June 9-13, 1986.

"Learning Geometry with Computer Assistance," the International Commission on
     Mathematical Instruction Symposium, Strasbourg, France, March 25-30, 1985.

"The Complexion of Computer Science Within the Liberal Arts," the ACM Conference
     on Computers and the Liberal Arts, Racine, WI, October 27-29, 1983.

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